Average of array element at defined interval
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Nikhil Chourasia
on 24 Mar 2015
Answered: prem matlani
on 21 Mar 2020
Suppose,
a=[1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5]
i want to calculate average of group of five nos. so that my resulting array is like
avg=[3 3 3 3]
Can any one help me for the same.
2 Comments
Adam
on 24 Mar 2015
What does four-four nos. mean? Judging from your example I assume you want the average of groups of 5 numbers. Or do you want 4 averages, irrespective of how many elements fall into the four subsections of your array (whose length may not be divisible by 4)
Accepted Answer
Star Strider
on 24 Mar 2015
Use the rehaspe function, then mean, since it takes the means of columns as its default behaviour:
a=[1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5];
ar = reshape(a, [], 4)
ar_mean = mean(ar)
produces:
ar =
1 1 1 1
2 2 2 2
3 3 3 3
4 4 4 4
5 5 5 5
ar_mean =
3 3 3 3
4 Comments
Stelios Fanourakis
on 13 May 2019
I think this is what I need. But why I get NaN values when I am using this line
AxesH = set(gca,'XTick',(0.099:1:37.9))
e = double(AxesH)
ar = reshape(e, [], 2)
ar_mean = mean(ar)
More Answers (1)
prem matlani
on 21 Mar 2020
High,
I have collected data from a source and it clearly shows that there has been some tests at specific points in the x axis (1100, 900, 650, 420, 200) approx, how can i filter this data to get rid of the noise within the ranges
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